The first thing I noticed is negative: The upper side of the sleeve is not fixed on the display, as I was used to from the cheapest Tablet Cases with magnet there. For my Asus Memo Tab For example, I had the envelope for 7.99 euros, behind ugly hard plastic, front leatherette on cardboard. It was not pretty, but it worked very well. The display was always closed by a fixed surface mounted casing.
In this envelope here that looks rather different. If the tablet flat on the table, it is of course alone closed by gravity.
But if one lifts it one notices immediately that the front door is indeed by the tab on the tablet, the flap depends on but from the tablet away. Since you bring loose a few fingers between shell and tablet.
That would be up to this point, although not really bad, just inconvenient and annoying.
Probelmatisch it is now but if you want to transport the tab in the backpack or large handbag.
Because in this gap also fits easily a keychain or many other things that could cause a display damage. And it's just nunmal the main task of a shell exactly precisely to prevent this. And since these shell fails fatal.
Second negative point:
The shell has in the front door to place the tablet to two grooves. This works fine and keeps well.
Problem: When you touch the screen, the envelope including Tab slightly bobs. Thus making it impossible quasi, eg Plants vs. Zombies or to play like. Also very annoying.
Conclusion:
For this outrageous price you can expect far more. Apart from the great looks and the valence shell this stinks from the cheapest to China cases on the market. That should at least be times embarrassing Sony.